Malicious PDF — malware analysis report

Static analysis result for SHA-256 49ea522470184117…

MALICIOUS

PDF

80.3 KB Created: 2021-08-12 13:30:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 36622a88ff6f21dac4082caa91a795f3 SHA-1: a7bd26262a8d68032b6d52f4e9e14c7d5ce6cf8a SHA-256: 49ea522470184117d538987e67d37c1ad99a684636992ce15c0843bc58eca123
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external websites, many of which are hosted on compromised CMS platforms or disposable domains, indicating a link farm designed to redirect users to potentially malicious content. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports a malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it is designed to facilitate phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4210

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://garglob.ru/uplcv?utm_term=how+to+get+20+million+robux+for+free PDF link annotation
    • http://halongbaycruises.org/upload/files/89317948392.pdfIn PDF document text
    • http://penzionriverside.cz/files/file/41828173254.pdfIn PDF document text
    • http://www.heksan.com.pl/file/movon.pdfIn PDF document text
    • http://onnetsolution.in/userfiles/file/35193342658.pdfIn PDF document text
    • https://luxartparquet.com/wp-content/plugins/super-forms/uploads/php/files/d4bc977e33086c0211c93582cbdf4a31/36348561528.pdfIn PDF document text
    • https://www.napariverinn.com/wp-content/plugins/super-forms/uploads/php/files/cf7b96931e0ee8dd2e07d3fdabce8ab9/putidepunib.pdfIn PDF document text
    • https://autoschiller.de/wp-content/plugins/formcraft/file-upload/server/content/files/160ae3c2562ec0---314264514.pdfIn PDF document text
    • http://www.nbrownies.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a71fa4ab605---dadidonegusenabeg.pdfIn PDF document text
    • http://dcbestwings.com/uploads/files/29216731245.pdfIn PDF document text
    • https://aimhc.com/userfiles/file/tosefirazuro.pdfIn PDF document text
    • http://cricalliance.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a97034a481---malazugidugug.pdfIn PDF document text
    • https://atolab.it/wp-content/plugins/super-forms/uploads/php/files/e0ae7dec2d539951489d07e3d9e24c21/92173672169.pdfIn PDF document text
    • http://makaeximworld.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cc5c002de4---63559039352.pdfIn PDF document text
    • https://rebel-guitars.com/wp-content/plugins/super-forms/uploads/php/files/a1f03f6eccaccc0d0e74259c6c4a4b39/28749024802.pdfIn PDF document text
    • http://heritagecarletonplace.com/clients/c/c2/c23aa4fb54f25340752d20cfcff880b2/File/38583019124.pdfIn PDF document text
    • https://lakeshoresmilesdentistry.com/wp-content/plugins/super-forms/uploads/php/files/drj0aptiqafbvogie23i9ikdi7/99689460234.pdfIn PDF document text
    • http://bindashnews.com/userfiles/file/69159112573.pdfIn PDF document text
    • https://nonbodepsg.com/uploads/files/nezazom.pdfIn PDF document text
    • http://kirks-pool.com/wp-content/plugins/formcraft/file-upload/server/content/files/160db94a31b4b9---46046727429.pdfIn PDF document text
    • https://www.shopveriamici.com/wp-content/plugins/super-forms/uploads/php/files/9uucnip3robsjtnnb2hragjuu1/fodapi.pdfIn PDF document text
    • https://vanchuyenduongsat.vn/upload/files/jaremebapemev.pdfIn PDF document text
    • http://thallo-food.hu/uploads/ckfinder/userfiles/files/95001433019.pdfIn PDF document text
    • https://www.swx.global/wp-content/plugins/super-forms/uploads/php/files/f801b3ca1bfe5e3a80e3cb7419926474/fomuzugaxezuzopezugad.pdfIn PDF document text
    • https://xn--z4qq44i.tw/upload/actfiles/27341720295.pdfIn PDF document text
    • https://fitnessrev.net/wp-content/plugins/super-forms/uploads/php/files/mctgh6q5r2kar99lkjs6m2c9e1/78089015916.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f254.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF254 10888 bytes
SHA-256: c0e6e1dbd1759da6fe88f3b68e1ef9e6a86148c9b074758edf71ee9e22bed5c6
font_01_sfnt_off00010b83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B83 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1